In the end, about one-third of the ancient cities were lucky enough to escape the beast horde's siege.
The other two-thirds of the buildings and the Ancients were all covered by the creeping black tide.
The sky above the cities was immediately filled with the sounds of sucking, chewing, and snoring...
Not to mention, the sounds of swallowing.
All the monsters were swallowing crazily, swallowing food that was three to five times larger than their own bodies and crystals that they could not digest until their internal organs exploded.
The glorious city was dimming and withering at a speed visible to the naked eye. Not long after, it melted and collapsed like a sand sculpture that had been soaked by the waves, turning into debris on the ground.
Even the broken walls that looked like gravestones were broken into dust and sand after a moment. They swirled and spoke sadly of the Ancients' final glory.